Daily entries from the 17th century London diary
If you would like to write a summary for this topic, email phil [at] gyford [dot] com
A harpsichord is a musical instrument played by means of a keyboard. It produces sound by plucking a string when a key is pressed.
In the narrow sense, "harpsichord" designates only the large wing-shaped instruments in which the strings are perpendicular to the keyboard. In a broader sense, "harpsichord" designates the whole family of similar plucked keyboard instruments, including the smaller virginals, muselar, and spinet.
The harpsichord was widely used in Renaissance and Baroque music. During the late 18th century it gradually disappeared from the musical scene with the rise of the piano. But in the 20th century it made a resurgence, used in historically informed performance of older music, in new (contemporary) compositions, and in popular culture.
The harpsichord is an instrument larger than a spinet, with two or three strings to a note.
According to this 1911 encyclopedia, the harpsichord, harpsicon and double virginals are all either the same or closely related instruments (scroll down): http://5.1911encyclopedia.org/H/HA/HARPY.htm
Harspicon was simply a charming seventeenth century variant spelling of the harpsicord, a keyboard where strings were plucked with plectra.